Design deficiencies draw the most fire in the government engineer’s report on the December 2007 fatal collapse of a parking garage under construction in Jacksonville, Fla. The U.S. Occupational Safety and Health Administration released a redacted version of the May 2008 report in response to a Freedom of Information Act request by the Florida Times-Union newspaper. Photo: Jacksonville Fire & Rescue Dept. Worker’s body was recovered after two days, but collapse’s cause remains unclear. One construction worker was killed and 23 others were injured on Dec. 6, 2007, when the six-level, 39,000-sq-ft, post-tensioned parking garage for the Berkman Plaza II
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.